Accident Details
A flight instructor was demonstrating flight maneuvers to a student pilot. The helicopter was configured for a hovering autorotation, and the throttle was closed. The helicopter descended in a left skid low attitude. The left skid made contact with the ground. The instructor attempted corrective control inputs, but the helicopter rolled onto its left side. The fuselage and main rotor system sustained substantial damage.
Instructor Report
The flight instructor reported that the helicopter and engine had no mechanical failures or malfunctions prior to the accident. He stated that the accident could have been prevented if he had applied right cyclic and right yaw pedal control during the descent, and cushioned the landing by raising the collective control.
Investigation
No further details were provided regarding the specific aircraft type, registration, date, location, or occupants. The investigation focused on the instructor's actions and the helicopter's behavior during the autorotation maneuver.